12621329 has 8 divisors (see below), whose sum is σ = 14814528. Its totient is φ = 10525680.

The previous prime is 12621307. The next prime is 12621337. The reversal of 12621329 is 92312621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12621329 - 2¹⁶ = 12555793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12621298 and 12621307.

It is not an unprimeable number, because it can be changed into a prime (12621379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24107 + ... + 24624.

It is an arithmetic number, because the mean of its divisors is an integer number (1851816).

Almost surely, 2^12621329 is an apocalyptic number.

It is an amenable number.

12621329 is a deficient number, since it is larger than the sum of its proper divisors (2193199).

12621329 is an equidigital number, since it uses as much as digits as its factorization.

12621329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48775.

The product of its digits is 1296, while the sum is 26.

The square root of 12621329 is about 3552.6509820133. The cubic root of 12621329 is about 232.8279043814.

The spelling of 12621329 in words is "twelve million, six hundred twenty-one thousand, three hundred twenty-nine".